/*
 * Copyright 2015-2016 Imply Data, Inc.
 * Copyright 2017-2019 Allegro.pl
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

function extractConfig(text) {
  var a = '<script>var __CONFIG__ = {';
  var b = '};</script>';
  var ai = text.indexOf(a);
  var bi = text.indexOf(b);
  if (ai < 0 || bi < 0) return null;
  return JSON.parse(text.substring(ai + a.length - 1, bi + 1));
}

module.exports = extractConfig;
